"""Scheduler on the (virtual) demo clock — stub until #13. Called from app.main lifespan."""


async def start() -> None:
    """Start periodic ticking (#13)."""


async def stop() -> None:
    """Stop the scheduler (#13)."""


async def run_until_now() -> None:
    """Replay all due events up to `app.core.clock.now()` in order, idempotently (#13)."""